entities/task_types.py


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from typing import Annotated
from pydantic.functional_validators import AfterValidator

IDLE = 'IDLE'
MINING = 'MINING'

MIA = 'MIA'
ERROR = 'ERROR'

task_types = [
    IDLE,
    MINING,
]


def is_task_type(task: str):
    assert task in task_types, f"'{task}' is not a valid task type."
    return task


task_type = Annotated[str, AfterValidator(is_task_type)]